Results 61 to 70 of about 49,349 (281)

Semi‐autonomous Navigation of Magnetic Microcarriers for Knee Cartilage Regeneration

Advanced Intelligent Systems, EarlyView.
Autonomous navigation of magnetic microcarriers in complex 3D environments is investigated through a semi‐autonomous strategy integrating magnetic actuation with monocular visual feedback. Real‐time global tracking is achieved via radio‐frequency‐based localization and depth estimation, while model‐based computation determines optimal steering forces ...
Kim Tien Nguyen, Cuong Manh Hoang, Jong‐Oh Park, Jayoung Kim   +3 more
wiley   +1 more source

A Novel Test for MOND: Gravitational Lensing by Disk Galaxies

The Astrophysical Journal
Disk galaxies represent a promising laboratory for the study of gravitational physics, including alternatives to dark matter (DM), owing to the possibility of coupling rotation curves’ dynamical data with strong gravitational lensing (SGL) observations ...
Christopher Harvey-Hawes, Marco Galoppo
doaj   +1 more source

A gamified formative question bank to enhance student learning and engagement in a foundational medical science course

Anatomical Sciences Education, EarlyView.
Abstract While gamified learning platforms show promise for engaging digital learners and promoting active learning, evidence of their effectiveness in predicting academic outcomes remains limited. This study examined how engagement patterns and incentives impact academic outcomes in a gamified environment to determine whether a formative question bank
Mohammad Aldalou, Angel Laboy, Laura E. Fraser, Jeremey Walker, William S. Brooks, Brook Hubner   +5 more
wiley   +1 more source

Lensing Point-spread Function of Coherent Astrophysical Sources and Nontrivial Wave Effects

The Astrophysical Journal
Most research on astrophysical lensing has been conducted using the geometric optics framework, where there exists a clear concept of lensing images. However, wave optics effects can be important for coherent sources, e.g., pulsars, fast radio bursts ...
Xun Shi
doaj   +1 more source

Lensing in the Blue. II. Estimating the Sensitivity of Stratospheric Balloons to Weak Gravitational Lensing

The Astronomical Journal, 2023
The Superpressure Balloon-borne Imaging Telescope ( SuperBIT ) is a diffraction-limited, wide-field, 0.5 m, near-infrared to near-ultraviolet observatory designed to exploit the stratosphere’s space-like conditions.
Jacqueline E. McCleary, Spencer W. Everett, Mohamed M. Shaaban, Ajay S. Gill, Georgios N. Vassilakis, Eric M. Huff, Richard J. Massey, Steven J. Benton, Anthony M. Brown, Paul Clark, Bradley Holder, Aurelien A. Fraisse, Mathilde Jauzac, William C. Jones, David Lagattuta, Jason S.-Y. Leung, Lun Li, Thuy Vy T. Luu, Johanna M. Nagy, C. Barth Netterfield, Emaad Paracha, Susan F. Redmond, Jason D. Rhodes, Jürgen Schmoll, Ellen Sirks, Sut Ieng Tam   +25 more
doaj   +1 more source

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

The Scales of Gravitational Lensing

Universe, 2016
After exactly a century since the formulation of the general theory of relativity, the phenomenon of gravitational lensing is still an extremely powerful method for investigating in astrophysics and cosmology.
Francesco De Paolis, Mosè Giordano, Gabriele Ingrosso, Luigi Manni, Achille Nucita, Francesco Strafella   +5 more
doaj   +1 more source

A review on analytical studies in gravitational lensing

Frontiers in Physics, 2023
In this study, we review some current studies on gravitational lensing for black holes, mainly in the context of general relativity. We mainly focus on the analytical studies related to lensing with references to observational results.
Abhishek Chowdhuri, Saptaswa Ghosh, Arpan Bhattacharyya   +2 more
doaj   +1 more source

Strong field gravitational lensing in scalar tensor theories

, 2006
Strong field gravitational lensing in the Brans-Dicke theory has been studied. The deflection angle for photons passing very close to the photon sphere is estimated for the static spherically symmetric space-time of the theory and the position and ...
Arunava Bhadra, Bardas B, Bhadra A, Bhadra A Sarkar K Datta D P Nandi K K, Damour T, Danzmann K, Darwin C, Eiroa E F, Joshi P S, Kabita Sarkar, Larranaga Rubio E A, Luminet J P, Murphy T W, Richstone D, Turyshev S G, Turyshev S G Shao M Nordtvedt K L, Turyshev S G Shao M Nordtvedt K L, Will C M   +17 more
core   +2 more sources

Youth activism in Poland: Perceptions, participation and diverging perspectives from young people and activists

British Educational Research Journal, EarlyView.
Abstract Recent years have seen a growing scholarly interest in youth activism (YA), a phenomenon often viewed as a positive development in response to declining civic and political engagement among young people. However, most of the research focuses on the activists themselves and gives less attention to how YA is perceived by the broader youth ...
Martyna Elerian, Miri Yemini, Katarzyna Jasikowska   +2 more
wiley   +1 more source